M90S-12S Modular Online UPS – Scalable Single-Phase Power System

6kVA – 48kVA

208/120 VAC or 240/120 VAC Single Phase

Scalable modular UPS with N+1 redundancy and universal slots for continuous, high-efficiency power in residential, edge, and industrial applications.

6kW – 48kW | 240/120V or 208/120VAC Single-Phase | Modular 12 Slot Online UPS

The Xtreme Power M90S-12S is the largest chassis in the M90S single-phase modular UPS family, delivering up to 48 kW of scalable online double-conversion protection. With 12 universal slots, each bay can hold either a power module or a battery module, giving maximum flexibility to configure for capacity, redundancy, or extended runtime.

The M90S-12S includes a 10” color touch LCD display, front-access only design, integrated maintenance bypass, and hot-swappable modules. It delivers reliable, clean power for demanding applications — from advanced AV systems to edge compute containers and luxury residential energy platforms.

Key Features & Benefits

  • 12 Universal Slots — Supports up to 12 power and battery modules for maximum capacity and runtime flexibility.
  • Flexible Capacities — Configure output as 6, 12, 18, 24, 30, 36, 42, or 48 kW.
  • 10″ Touch LCD Display — Large color interface provides system-level graphics, status, and alarms.
  • Redundancy or Capacity Configurations — Supports N+1 redundancy, extended runtime builds, or full-capacity deployments.
  • Extended Runtime Options — Scale battery modules to achieve backup times from minutes to 6+ hours.
  • Online Double-Conversion — Delivers continuous, clean, and regulated sine wave power for mission-critical loads.
  • Hot-Swappable Modules — Replace power and battery modules without system shutdown.
  • Front-Access Only Design — Simplifies installation and service in space-constrained environments.
  • Comprehensive Warranty — Includes start-up (5×8), 3-year parts, and 2-year on-site labor (USA & Canada).

Applications

The M90S-12S UPS is built for enterprise, AV, and luxury residential environments requiring extended runtime and large-scale single-phase power:

Comparing the M90S to Other UPS Platforms

Evaluating alternatives or standardizing across sites often requires a side-by-side comparison.

See how the Xtreme Power M90S UPS compares to APC, Eaton, Vertiv, RoseWater and Toshiba UPS platforms by voltage class, topology, runtime, and lifecycle cost.

View all M90S UPS comparisons
https://xpcc.com/m90s-modular-ups-competitive-comparisons/

Contact Us Today

The M90S-12S UPS provides 6–48 kW of scalable single-phase protection in a front-access modular chassis. With universal slots, extended runtime options, and a 10” system LCD, it is the premium choice for AV, broadcast, edge compute, and whole-home luxury applications.

Contact Us | View All Products | UPS Selector

(800) 582-4524

sales@xpcc.com

MODEL NUMBER M90S-12S6K M90S-12S12K M90S-12S18K M90S-12S24K M90S-12S30K M90S-12S36K M90S-12S42K M90S-12S48K
CAPACITY Power Rating 6kW 12kW 18kW 24kW 30kW 36kW 42kW 48kW
INPUT Voltage/Frequency Nominal 120/208V or 120/240V // 50/60Hz auto-sensing 120/240V
Connections 2PH+N+G
OUTPUT Voltage & Frequency 120/208V or 120/240V // 50/60Hz auto-sensing 120/240V
Connections 2PH+N
Efficiency / THD (full load) Up to 98% ECO mode, 93% online mode / ≤2% (Linear load);≤3% (Non linear load)
Overload Capacity 100% – 110% for 30 min; 110% – 130% for 5min; 130% – 150% for 10s; > 150% for 200ms
BATTERY SYSTEM Nominal Voltage +/-96VDC (default) or +/-120VDC
Max charging (adjustable) 4A per Power Module
MODULE Power Module 16.3”W x 24”D x 5.2”H / 38 lbs
DIMENSIONS Battery Module (M90S-BMXRV2) 16.3”W x 24”D x 5.2”H / 107 lbs
& WEIGHT Battery Module (M90-BCBAT) 7.3”W x 38.5”D x 3.2”H / 85 lbs
ENCLOSURE M90S-12S UPS 23.6”W x 36.0” D x 79.1”H // 586 lbs without modules
DIMENSIONS & WEIGHTS M90-BC External Battery Cabinet 23.6”W x 43.8” D x 79.1”H //  416 lbs without modules
ENVIRONMENT Temperature 0–40°C (32–104°F)
Altitude 5,200 ft above sea level
APPROVALS UL-1778 (TUV), cUL, FCC A, RoHS
WARRANTY 3 year electronics, 3 year battery (USA and Canada)
COMMUNICATIONS INTERFACE RS-232, USB, dry contacts, EPO, (2) intelligent slots for optional cards (Web/SNMP, Relay, Modbus)
INCLUDED IN BOX User manual, USB cable, RS-232, ViewPower software, standard anchor brackets